The issue you're encountering with activation can sometimes occur if your "Internet Security" settings are set to non-default settings.
Please try turning down your IE security settings and trying again. To do so, please do the following:
- Press the Windows key and "R" at the same time.
- A "Run" window will appear. Please paste the path below in the box and click OK:
In the "Internet Security" window that appears, please select the Security tab and ensure your settings appear like so: http://sd.stardock.com/sean/JingImages/2015-01-15_1729.png
Once you've done that, please try activating once again and let us know if you encounter any issues.
You can also alternatively check this page out: